<template>
    <el-menu default-active="1-4-1" background-color="#545c64" text-color="#fff" active-text-color="#ffd04b" class="el-menu-vertical-demo" :collapse="isCollapse">
      <h3> {{isCollapse? '后台' : '通用后台管理系统'}}</h3>
      <el-menu-item @click="clickMenu(item)" v-for="item in noChildren" :key="item.path" :index="item.path + '' ">
        <i :class="'el-icon-' + item.icon"></i>
        <span slot="title"> {{item.label}} </span>
      </el-menu-item>
      <el-submenu v-for="item in hasChildren" :key="item.path" :index="item.path + '' ">
        <template slot="title">
          <i :class="'el-icon-' + item.icon"></i>
          <span slot="title"> {{item.label}} </span>
        </template>
        <el-menu-item-group v-for="(subItem, subIndex) in item.children" :key="subItem.path">
          <el-menu-item  @click="clickMenu(subItem)" :index="subIndex.toString()"> {{subItem.label}} </el-menu-item>
        </el-menu-item-group>
      </el-submenu>
    </el-menu>
</template>

<script>
export default {
  name: 'CommonAside' ,
   data() {
     return {
       menu:[]
     };
   },
   methods: {
     clickMenu(item) {
      this.$router.push({
        name: item.name
      })
      this.$store.commit('selectMenu', item)
     }
   },
   computed: {
    noChildren () {
      return this.asyncMenu.filter(item => !item.children)
    },
    hasChildren () {
      return this.asyncMenu.filter(item => item.children)
    },
    isCollapse() {
      return this.$store.state.tab.isCollapse
    },
    asyncMenu() {
      return this.$store.state.tab.menu
    }
   }
}
</script>

<style lang="less" scoped>
.el-menu-vertical-demo:not(.el-menu--collapse) {
  width: 200px;
  min-height: 400px;
}
.el-menu {
  height: 100%;
  border: none;
  h3 {
    color: #fff;
    text-align: center;
    line-height: 48px;
  }
}
</style>
